We're dividing 986510 by 18 
We want to figure out the number of times 986510 can be divided by 18.

Moving on to step 1:
18 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 18

Moving on to step 2:
If we divide 98 by 18, we get 5 and a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 90 from 98 leaves us with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 18

On to step 3:
18 goes into 86 4 times with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 54.0
If we subtract 72 from 86, we get 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 18

Going ahead to step 4:
The number 18 fits into 145 8 times, leaving a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 548.0
Deduct 144 from 145 and we're left with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 18

On to step 5:
18 can be fit into 11 0 times, resulting in a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 5480.0
Subtracting 0 from 11 leaves us with 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 18

Going ahead to step 6:
18 can be fit into 110 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 54806.0
Deduct 108 from 110 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
If we divide 20 by 18, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 54806.1
Subtract 18 from 20 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
18 can be fit into 20 1 times, resulting in a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 54806.11
Subtracting 18 from 20 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 54806.11, with a leftover of 0.002.